CMMotionManager *motionManager = [[CMMotionManager alloc]init];

    if (!motionManager.accelerometerAvailable) {

        // fail code // 检查传感器到底在设备上是否可用

    }

    motionManager.accelerometerUpdateInterval = 0.01; // 告诉manager，更新频率是100Hz

    /*

    [motionManager startAccelerometerUpdatesToQueue:[NSOperationQueue currentQueue] withHandler:^(CMAccelerometerData *latestAcc, NSError *error)

    {

        //2. Gravity 获取手机的重力值在各个方向上的分量，根据这个就可以获得手机的空间位置，倾斜角度等

        CMAccelerometerData *newestAccel = motionManager.accelerometerData;

        double accelerationX = newestAccel.acceleration.x;

        double accelerationY = newestAccel.acceleration.y;

        imageView.frame=CGRectMake(accelerationX*100 , accelerationY*100, 40, 40);

        NSLog(@"%f==%f\n",accelerationY,accelerationY);

        //通过陀螺仪模块可以实现模拟赛车，模拟射击等。

        [self.view addSubview:imageView];

    }];

    //*/

    NSLog(@"%f", Height);

    /* 加速度传感器开始采样，每次采样结果在block中处理 */

    // 开始更新，后台线程开始运行。

    [motionManager startAccelerometerUpdatesToQueue:[NSOperationQueue currentQueue] withHandler:^(CMAccelerometerData *accelerometerData, NSError *error)

     {

         CMAccelerometerData *newestAccel = motionManager.accelerometerData;

         double accelerationX = newestAccel.acceleration.x;

         double accelerationY = newestAccel.acceleration.y;

         f.origin.x += (accelerationX * SIZE) * ;

         f.origin.y += (accelerationY* SIZE) * -;

         if(f.origin.x < )

             f.origin.x = ;

         if(f.origin.y < )

             f.origin.y = ;

         if(f.origin.x > (self.view.frame.size.width - f.size.width))

             f.origin.x = (self.view.frame.size.width - f.size.width);

         if(f.origin.y > (self.view.frame.size.height - f.size.height))

             f.origin.y = (self.view.frame.size.height - f.size.height);

         NSLog(@"%f==%f\n",f.origin.x ,f.origin.y);

         /* 运动动画 */

         [UIView beginAnimations:nil context:nil];

         [UIView setAnimationDuration:0.1];

          if(f.origin.y>=Height-)

         {

            f.origin.y=Height-;

         }

         imageView.frame=CGRectMake( ,f.origin.y, , );

         //通过陀螺仪模块可以实现模拟赛车，模拟射击等。

         [self.view addSubview:imageView];

         if(f.origin.y>=(Height-)/&&f.origin.y<=(Height+)/)

         {

             [self.view addSubview:baby];

           //  [NSThread sleepForTimeInterval:5.0];

             //

         }

         else

         {

             [baby removeFromSuperview];

         }

         [UIView commitAnimations];

     }];